I watched both fights and the way Chisora found his daddy in Fury makes me doubt an healthy hard puncher like Helenius wouldn't drop bombs on him like he scarcely did in the first round.
The best way to find out is to set up a rematch if Chisora doesn't get past Haye or after he gets beat by another Klitschko.
I like Helenius, he kinda looks like **** but he puts people to sleep and that's a likable quality.